Curious if there was a way that he could sell to me and then I rent to him.

After 12 months, you can rent the whole thing out and repeat the process.

Even if I used my VA benefits for a $0 down and rented my current home out for $1.6k per month.

While I live there/my son lives there can I rent out a room to a tenant? 

As the screenshot the renter provided only has three months accounted for and is edited (due to the rent being grouped together), I am going to be reaching out directly to M******* to gather more information through complete bank statements and her insight on what occurred with the funds.

Try house hacking once more or use your down payment for rent properties.

Sellers did share numbers but they just lived there so doesn’t do much with collecting rent numbers. and agent is asking for numbers from OTHER UNITS because the one I have an offer on was personally occupied.do you have some to share? 

Many seller financed deals we see they price was inflated (saw on recently where home didn’t sell for 6 months at 79k so they seller financed it zero down for 99k).

My hope is to househack (living in one unit while my wife and I live in the other- not renting out rooms) and hold the property as an investment.

We are moving to another home that we have renovated, and will be renting out our primary residence on a long-term lease.